approx 3,500 rpm - no power
I bought a 2003 manual 350z track (100,000 miles) a while back and it had this issue when I bought it - I thought it would be an easy fix but it turns out not.
The car pulls fine to approx. 3,500 rpm and then it was like hitting a brick wall - it just did not want to pull through that.
Mechanic number 1 - advised no codes. New plugs fitted. One new coil pack fitted. New MAF fitted. New fuel pump and assembly fitted. Electrical connector fixed on one o2 sensor - car still ran the same.
Mechanic number 2 - advised no codes. Had it on the dynatune for some time. Replaced fuel pressure regulator. Car runs a little better but at 3,500 rpm instead of hitting a brick wall it just slowly Ö.very slowly wanders up through the rev range. He wants to do some expensive mod on fuel pipes and fuel rail. I understand that may deliver more fuel but am concerned the underlying problem may still be there.
I don't know an awful lot about cars (my son does although he likes his S13, 14 and 15) and really don't want to take it to the one Nissan dealer within 2,000 miles as I have had a bad experience with them before so was hoping someone might have some suggestion of what to look at next.